With the arrival of new devices for reading electronic books which must essentially public to the convenience of reading which entails having screens not based on a technology called "electronic ink" retroiluminadas acceptance, we are witnessing a phenomenon which is present in every day media in the media (press, internet and television) and is focusing the concerns of publishers, authors, libraries, readers. Everyone wants to have their space to capitalize on the growing popularity of ebook readers. The publishing industry displayed cautious in this new situation since, on the one hand, does not want to lose their market share and on the other hand feels that with the eBook may lose part of control of an industry that has capitalised during more than five centuries. Libraries in our country are beginning to offer services with electronic books in two ways. Yes there are differentiated in procurement policies which are carrying out publishers this phenomenon, implying perhaps more problematic is the theme uses, interests and other sectors involved and the preservation of copyright aspects. Scientific publishing houses policy is the same that has been used with electronic; journals i.e. does not purchase the book, if not a laying about permitted; uses access license nor is a unitary, if we subscribe to a closed package that focuses the interests of our users, and on the uses does not allow download purchase multi-user any member of the community which must be identified on an intranet. Procurement is carried out in the collections of public libraries is still much more restrictive; the book is provided with a digital rights Manager (DRM) which limits the uses and use the electronic multi-user capabilities, and if the library you want to have more copies to give you must buy additional licenses, i.e. its functionality is almost of the physical book: a person a loan. The pricing policy is also different the sale price to the public, overloading to almost triple its price per unit. In this communication we analyze the phenomenon and its impact on all agents and aspects of the process.